Mich. Comp. Laws § 123.155

Sec. 5. Cities may acquire a source of water supply under this act and may enter into contracts therefor and agreements with respect thereto and may issue their revenue bonds as provided herein, without regard to any limitations or procedural requirements which may be contained in any other laws (except Act No. 94 of the Public Acts of 1933) or in the charters of said cities. Except as herein expressly otherwise provided, the provisions of said Act No. 94 of the Public Acts of 1933, as now existing or hereafter amended, shall be applicable in all respects to the issuance of the revenue bonds and the rights and remedies of the holders thereof, and except as therein provided, no election need be held as a condition to the carrying out of any of the powers herein granted.